/* Main Card Styles */
.classima-author-card {
    background: #ffffff;
    border: 1px solid #e8e8e8;
    border-radius: 12px;
    padding: 24px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.classima-author-card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

/* Author Header */
.author-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #f0f0f0;
}

.author-avatar {
    margin-right: 15px;
}

.author-avatar img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-basic-info {
    flex: 1;
}

.author-name {
    font-size: 20px;
    font-weight: 700;
    color: #2d3748;
    margin: 0 0 8px 0;
    line-height: 1.2;
}

.seller-badge {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Author Details */
.author-details {
    margin-bottom: 24px;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #f8f9fa;
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-label {
    font-size: 14px;
    color: #718096;
    font-weight: 500;
}

.detail-value {
    font-size: 14px;
    color: #2d3748;
    font-weight: 600;
    text-align: right;
}

/* Author Actions */
.author-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.send-message-btn,
.view-profile-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
}

.send-message-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.send-message-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.view-profile-btn {
    background: #f7fafc;
    color: #4a5568;
    border: 2px solid #e2e8f0;
}

.view-profile-btn:hover {
    background: #edf2f7;
    border-color: #cbd5e0;
    transform: translateY(-1px);
}

/* Popup Styles */
.classima-popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

.popup-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.popup-content {
    position: relative;
    background: white;
    margin: 50px auto;
    max-width: 500px;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: popupFadeIn 0.3s ease;
}

@keyframes popupFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.popup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid #e8e8e8;
}

.popup-header h4 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: #2d3748;
}

.popup-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #a0aec0;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.popup-close:hover {
    background: #f7fafc;
    color: #4a5568;
}

.popup-form {
    padding: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #4a5568;
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.submit-btn,
.cancel-btn {
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.cancel-btn {
    background: #f7fafc;
    color: #4a5568;
    border: 2px solid #e2e8f0;
}

.cancel-btn:hover {
    background: #edf2f7;
}

.form-message {
    margin-top: 16px;
    padding: 12px;
    border-radius: 6px;
    font-size: 14px;
    text-align: center;
    display: none;
}

.form-message.success {
    background: #f0fff4;
    color: #2f855a;
    border: 1px solid #9ae6b4;
}

.form-message.error {
    background: #fed7d7;
    color: #c53030;
    border: 1px solid #fc8181;
}

/* Responsive */
@media (max-width: 768px) {
    .classima-author-card {
        padding: 20px;
    }
    
    .author-header {
        flex-direction: column;
        text-align: center;
    }
    
    .author-avatar {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .author-actions {
        grid-template-columns: 1fr;
    }
    
    .popup-content {
        margin: 20px;
        width: calc(100% - 40px);
    }
    
    .form-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .detail-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    
    .detail-value {
        text-align: left;
    }
}